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. 2023 Dec 28;14(1):87. doi: 10.3390/nano14010087

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© 2023 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).

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(a) RHEED pattern for $ϕ_{V}$ = 1750 $^{\circ}$ C showing a double streak pattern related to the phases Bi $_{2}$ Te $_{3}$ with $a_{1} =$ 4.31 Å and VTe $_{2}$ with $a_{2} =$ 3.59 Å, indicated by the blue and white arrows, respectively. (b) Height distribution at the surface as a function of the $ϕ_{V}$ . The insets show the surface morphology of the samples with $ϕ_{V}$ = 1750 $^{\circ}$ C and $ϕ_{V}$ = 1900 $^{\circ}$ C.